Permutation padlock



Jan. ',22, 1924. 1,481,380 7 E. l. LINDBERG PERMUTATION PADLOCK FiledFb. 26, 1923 2 Sheets-Sheet 1 I 1 E I Jan. 22 1924. 1,481,380

E. I. LINDBERG PERMUTATION PADLOOK Filed Feb. 26, '1923 ZSheets-Shaet- 2INVENTOR. Ell 2'17 02387 I 40 characters Patented Jan. 22, 1924.

U N I TE it I NT OFFICE.

EMIL I. LINDBERG, F GACKLE, NORTH. DAKOTA.

PERMU'IATION IPADLOCK.

Application filed February 26, 1923. Serial No. 621,419.

To all whom it may concern" Be it known that I, EMIL I. LINDBEZRG, acitizen of Finland, residingat Gackle, in the county of Logan and Stateof North Dakota have invented certain new and useful Improvements inPermutation Padlocks, of which the following is a specification,reference being had to the accompanying drawlugs.

This invention relates to certain new and useful improvements inpermutation pad locks wherein the looking or retaining pins for theshackle are controlled by rotating tumbler discs.

The primary object of the present invention is togenerally improve andsimplify devices of the present kind whereby they may meet with therequirements for a successful commercial use.

Another object of the invention is to provide a permutation padlockhaving a shackle which is slidable to released position; and sliding androtary locking pins for the shackle whereby a predetermined relation ofone of said discs with the rotary locking pin will permit release of'thelatter, and a different relation of said disc and the remaining discswill permit subsequent release of the sliding locking pin for per-'mitting movement of the shackle to released or open position.

With the above general objects in view and other that will becomeapparent as the nature of the invention is better understood the sameconsists in the novel form combination and arrangement of partshereinafter more fullydescribed, shown in the accompanying drawingsandclaimed.

In the drawings wherein like reference indicate corresponding partsthroughout the several viewet- Figure 1 is a front elevational view of apermutation padlock constructed in accordance with the presentinvention;

Figure 2 is a view of the padlock shown in Figure 1 with the backplate'of the padlock casing removed and parts in, section, the tworearmost tumbler discs being also removed;

Figure 31s a view similar to Figure'Q with the ratchet tumbler disc andits pawl applied and with the rotary locking pin in released position; Ip I Figure 1 is a view similar to Figure'2 with the rotary locking p'i nreleasedand with the tumblerdiscs disposed to permit release of thesliding locking pins;

Figure 5 is a view similar to Figure 1 with all of the tumbler discs inplace and with both the sliding and rotary locking pins in releasedposition;

Figure 6 is a vertical transverse sectional view of the lock complete,taken upon line 66-of Figure 5.

Figure 7 is an interior elevational view of the back plate of thepadlock casing;

Figure 8 is an elevational view of the front tumbler disc;

Figure 9 is a view similar to Figure 8 of the tumbler disc which isarranged next to the disc shown in Figure 8; I

Figure 10 is a view similar to Figure 9 of the third tumbler disc whichis disposed againstthe rear face of the disc shown in Figure 9;

Figure 11 is a view similar to Figure 10 showing the rear tumbler disc;

Figure 12 is a horizontal fragmentary see tional viewtaken directlyabove one of the sliding locking pins and adjacent parts;

1 Figure 13 is an elevational view] of one of the actuating members forthe sliding locking pins; and

Figure 14; is a viewsimilar to Figure 12 taken to one side of the rotarylocking pin.

Referring more in detail to the several views, the present inventionembodies a padlock casing generally denoted by the reference character 5andjwhich embodies a face plate 6 and a back plate 7 of similar formsuitably secured in side by side contiguous relation by means of rivets8 or the like, said plates 6 and 7 being formed in their adjacent faceswith mating complemental vertical recesses 9 which open at the tops ofthe plates and which coact to provide a socket near one end of thecasing for slidablere'ception of one end of the substantially U-shapedshackle 10. In a like manner the plates 6 and 7 are provided withvertical recesses 11 near their other ends which cooperate for producinga socket at the other end of the casing for reception of the other legor. end portion of the shackle 10. The last mentioned recesses arepreferably extended to a point slightly above the bot- "tom edges of theplates 6 and 7 so that this socket is longer than the socket formed bythe recesses 9 for receivingthe longer leg 12 of the shackle. However,it is to be understood that the recesses 9 may be of the same length asthe recesses 11 in case the shackle 10 is to be entirely removed fromthe casing and the leg 13 of the shackle which enters the socket formedby these recesses 9 may then be of the same length as the leg 12 withoutdeparting from the spirit of the present invention.

The leg 13 is made shorter in the form of the invention shown in thedrawings because the shackle illustrated is of the sliding and swingingtype wherein the longer leg 12 has a laterally projecting pin let at itslower end disposed in a vertical elongated groove formed by matingrecesses 15 in the adjacent faces of the plates 6 and 7 at the outerside of the grooves or recesses 11 and communicating with the latter,said recesses 15 terminating between the top and bottom edges of theplates 6 and 7 so as to form an upper stop shoulder 16 for limiting theoutward sliding movement of the shackle.

The lengths of the recesses 15 are such as to permit suiiicient slidingmovement of the leg 12 so as to permit the leg 13 to move entirely outof the socket formed by the recesses 9 whereuion the shackle ma be.

swung laterally about a pivot definedhy the longer leg 12, by reason ofthe provision of an arcuate horizontal groove 17 extending from theupper ends of the recesses 15 into the wall of the recess 11 of the backplate 7, which groove 17 permits the pin it to move therein so that thisswingingmovement of i the shackle is possible and limited in accordancewith the length of the "roove 17.

A shaft or spindle 18 is journaled in the plates 6 and 7 centrally ofthe casing so as to extend transversely of the latter in a horizontalposition. substantially midway between the legs of the shackle 10, andthis shaft 18 has one end projecting through the face plate 6 where itis provided upon its extreme end with an operating knob or handle 19 forfacilitating its rotation. The opposite end of the shaft may be suitablyheaded as at 20 to retain it in place. The plates 6 and 7 are providedwith mating circular recesses in their adjacent faces as at 21 throughthe axes of which the shaft 18 extends and the mating recesses 21 form acylindrical chamber in the lock casing in which are loosely androtatably positioned the rotating tumbler discs 22, 23, 2-1- and 25.

A tubular shaft 26 is j ournaled in the fac plate 6 and rotatablydisposed on the adj acent portion of the inner shaft 18, the front disc22 being fixed upon the inner or rear end of the tubular shaft 26 asshown clearly in Figure 6. The outer end of the tubular shaft 26 has asuitable handle or knob 27 secured thereon for facilitating its rotationwhich knob 27 is disposed between the knob 19 and the adjacent face ofthe plate 6 and which is of a larger size than the knob 19 so .25 issuitably secured upon the rear end of the shaft 18 so that the discs 22and are spaced apart a distance equal to the thicknesses of the disc 23and 24, and the latter two discs are disposed upon the shaft 18 so as tobe freely rotatable thereon between the discs 22 and 25.

As shown clearly in Figur s 8 to 11 inclusive, all of the tumbler discsare provided with similarly spaced notches 28 in the edges thereof,which notches are of similar size and form so that when the notches 28of all of the discs are in register and disposed as shown in Figure 4-,the sliding locking pins 29 are slid inwardly toward each other forreleasing them from the legs of the shackle 10 in a manner which willpresently become apparent.

As shown in Figures 6 and 8 the front tumbler disc 22 has a laterallyprojecting pin 30 which is directed rearwardly and the adjacent tumblerdisc 23 is provided with an arcuate slot 31 concentric with its axis andinto, which the pin 30 projects. ;Also, the third tumbler disc 24 isprovided with a similar laterally projecting pin 32 which projectsforwardly into the slot 31, the pins 30 and 32 being of such. diameterand so 5 disposed that they may pass each other in the slot 31 of thedisc 23. This latter construction is clear from Figure 6, wherein thepin 32 is shown as engaging the inner wall of the slot 31 and spacedfrom the outer;

wall thereof, while the pin 30 is shown contacting with the outer wallof the slot 31 and spaced from the inner wall thereof, said spaces beingslightly greater than the diameter of each of the pins. By reason ofthisconstruction it will be seen that positive rotation of the disc 22 willbe caused upon rotation of the tubular shaft 26, while relative movementbetween the disc 22 and the disc 23 and between the disc 23 and the disc24: will be permitted. although upon con tinued rotation of the shaft26. the pins 30 and 32 will engage the ends of the slot 81 so as to thenimpart rotation to the discs 23 and 2 1. It will also be seen that theinner shaft 18 simply controls the rear disc independently of theren'iaining discs.

As shown in Figures 3, 5, and-10, the third disc 24 is provided withperipheral ratchet teeth 33 which are engaged by a swinging pawl 34kwhich has its outer end pivoted as at 35 in a socket 36 provided in theback plate 7, and which has its inner end yieldingly held in engagementwith the teeth 33 by means of a compression spring 37 which is arrangedwithin a further socket 38 of the plate7.

The inner end portion of the longer leg 12 of the shackle is providedwith a transverse groove 39 at its inner side which coincides with theouter side portion of a cylindrical socket 40 which is formed by matingrecesses in the plates 6 and 7 between the leg 12 and the tumbler discs.A horizontal transversely disposed rotatable locking pin 41 is journaledin the socket 40 and has a reduced end which projects through thefaceplate 6 and which is provided with a suitable handle or knob 42 uponits outer end for facilitating the rotation of the pin 41. The pin'41 isprovided with a transverse groove 43 in the side thereof so that whensaid pin 41 is brought to the position shown in Figure 3 with the groove43 adjacent the groove 39, said pin 41 is released from the shackle, andwhen the pin 41 is turned to the position shown in Figure 2, so thatsaid pin 41 enters the groove 39, the shackle 10 is effectively lockedagainst outward sliding movement when in locked position. The lockcasing is provided with a flared recess 44 between the socket 40 and thetumbler discs so as to allow free movement of an inwardly projecting pin45 that is fixed to and projects laterally from the locking pin 41, saidpin 45 being of such length that its free end has a path of movementinwardly of the peripheral edge of the disc 23. This prevents rotationof the locking pin 41 from the locking position except when one of thenotches 28 of the disc 23 is brought to the position shown in Figure 2in line with the free end of the pin 45. WVhen the disc 23 is thusdisposed the pin 41 may be freely rotated from the position in Figure 2to the released position of Figure 3, which movement of the pin 41causes partial rotation of the disc 23 by engagement of the pin 45 withthe wall of the notch 28 in the disc 23 which has been aligned with saidpin 45.

The plates 6 and 7 are provided with horizontally aligned matingrecesses 46 which extend from each side of the chamber formed by thegrooves or recesses 9 and 11, as clearly shown in Figures 7 and 12.Horizontal sliding locking pins 29 are disposed in the grooves orrecesses 46 for movement toward and away from the tumbler discs and thelegs 12 and 13 of the shackle, the sliding locking pins 29 being adaptedto enter transverse grooves or notches 48 in the inner sides of theshackle legs 12 and 13 for locking the shackle in closed position. Thepins 29 are of such length that when they are slid to their limit ofmovement away from each other to engage in the grooves 48, their innerends will be disposed outwardly of the peripheries of the tumbler discs,and the notches 28 are so disposed that when one of said notches ofeachdisc is aligned with the inner end of one of thepins 29, theothernotch 28 of each disc may be registered with the other pin29.

In order that the pins 29 may be under the controlling influence of allof the discs,

said pins 29 are provided with transverse horizontal heads 49 upon theirinner ends which are of a length equal to the combined thicknesses ofall of the tumbler discs as illustrated in Figure 12. These heads 49have endsslidably engaging opposed faces of the inner portions oftherecesses 46 which are deepened for this purpose as at 50.

A transverse horizontally disposed rota: table shaft 51 is journaled inthe face plate 6 above each of the pins 29, and each shaft 51 isprovided with a laterally downwardly projecting pin 52 whose free endloosely engages in a socket 53 provided in the adjacent side of theadjacent pin 29. It will thus be seen that when the discs are properlypositioned forpermitting inward movement of the pins 29 to releasedposition, such movement of said pins may be caused by rotation of theshaft 51 in one direction, while said pins 29 may be projected outwardlyto looking position upon rotation of the shafts 51 in the oppositedirection. Each shaft 51 is provided with a handle or knob 54 upon itsouter end outwardly of the plate 6 for facilitating its rotation orpartial rotation, Suitable dials 55 may be provided about the severalknobs and the latter may be provided with suitable pointers 56 so thatthe lock may be readily operated by one familiar with any desiredpredetermined combination for which the lock has been constructed. Theexact combination may vary as desired and no specific combination willbe mentioned herein.

In operation, assuming that the pins 41 and 29 are in locked position asshown in Figure 2, the knob 27 is turned in the dire-:- tion of thearrow 00 of Figure 2 until the pointer of the knob 27 registers with theproper number of its dial wherein a notch 28 of the disc 23 is in linewith the pin 45. The pin 41 is then turned from the position of Figure 2to the position, of Figure 3 so that the leg 12 will be unlocked in sofar as the pin 41 is concerned. The knob 27 is then further turned inthe same direction of turning as that in which the pawl 34 is inactivefor preventing rotation of the disc 24. This turning movement of theknob 27 is continued until its pointer is registered with the propernumber of its dial wherein the disc 24 has been turned to bring itsnotches 28 in register with the sliding locking pins 29, rotation beingimparted to the disc 24 from the shaft 26 through the discs 22 and 23 byengagement of the pin 30 with one end of the slot 31 and the engagementof the pin 32 with the opposite end of said slot 31. The knob 27 is thenturned in the opposite directionuntil its pointer registers with theproper number of its dial with the notches 28 of the discs 22 and 23broughtin register with each other &

ing this reverse turning movement the pin 30 moves from one end of theslot 31 to the opposite end thereof. The disc 22 then causes the disc 23to be rotated until said one end 01" the slot 31 is engaged by the pin32, whereupon the discs 22, 23 and ainst "further turning in thisdirection by the pawl 34 and these three discs are stopped with theirnotches all aligned or in register with each other and with the slidinglocking pins 29. The knob 19 is then turned in the direction of thearrow .7) until its pointer is aligned with the proper number of itsdial wherein the notches 28 of the disc are brought in register with thenotches of the other three discs and in alignment with the pins 29. Theknobs 5 are then turned in the proper direction to slide the pins 29into the notches 28 from the position of Figure i to the position ofFigure 5, wherein said pins 29 are disengaged from the legs 12 and 13 ofthe shackle 10.. lVhen this has been done the shackle may no readilydrawn outwardly to unlocked position, and with the specific form ofshackle shown, the latter is swung about the leg 12 after the leg 13 hasbeen withdrawn entirely out of the socket formed by the recesses 9.lVhen it is desired to lock the padlock the shackle is swung to alignthe leg 13 with its socket and the shackle is then forced inwardly tocause the leg 13 to enter its socket. The knob 27 is then turned aslight distance to align a notch of the disc 23 with the pin Q5. The pin41 is then rotated to its locking position as shown in Figure 2. It willbe understood, however, that the knobs 54 have been previously ro tatedto slide the pins 29 outwardly into the notches 4:8. lVhen these stepshave been taken, the notches of the several discs have been moved out ofregister and the inner ends of the pins 29 are engaged with theperipheral edges of one or more of the discs whereby said pins areeiiectively held in outwardly slid locked position.

From the foregoing description it is believed that the construction andoperation as well as the advantages of the present invention will bereadily understood and appreciated by those skilled in the art.

Minor changes may be made without materially departing from the spiritand scope ot the invention as claimed.

What I claim is 1. A permutation padlock comprising a casing havingspaced vertical sockets therein open at the top of the casing, asubstantially U-shaped shackle adapted to have its legs slidably movedinto said sockets,

are held a nesnaeo a horizontal transverse rotatable locking pinoperatively associated with one leg of the shackle, a horizontalslidable lockin pin operatively associated with the other leg of theshackle, means to manually move said locking pins separately to lookingor released position, means including a plurality of rotatable tumblerdiscs having a transverse horizontal axis and mounted between the legsof the shackle for retaining said lock operatively associated with oneleg of the shackle, a horizontal slidable locking pin operativelyassociated with the other leg of the shackle, means to manually movesaid locking pins to looking or released position,

means including a plurality of rotatable tumbler discs having atranverse horizontal axis and mounted between the legs of the shacklefor retaining said locking pins in locking position and movable topositions for permitting releasing movement of the locking pins, andmeans to rotate said tumbler discs, the sliding locking pin being undercontrol of all of said tumbler discs, and means placing the rotarylocking pin under the controlling influence of a single one of saidtumbler discs.

3. A permutation padlock comprising a casing having spaced vertical.sockets therein open at the top of the casing, a substantially U-shapedshackle adapted to have its legs slidably moved into said sockets, ahorizontal transverse rotatable locking pin operatively associated withone leg of the shackle, a horizontal slidable locking pin operativelyassociated with the other leg of the shackle, means to manually movesaid locking pins to looking or released position, means including aplurality of rotatable tumbler discs ha ing a transverse horizontal axisand mounted between the legs of the shackle for retaining said lockingpins in looking position and movable to positions for permittingreleasing movement of the locking pins, and means to rotate said tumblerdiscs, a shaft upon which one of said discs is fixed, means supporting apair of said discs for free rotation relative to the shaft and the firstnamed disc, and means operatively connecting said discs in serial orderwhereby the discs are placed under the actuating influence of each otherand are permitted limited movement relative to each other.

a. A permutation padlock comprising a casing having spaced verticalsockets therein open at the top of the casing, a substantially U-shapedshackle adapted to have its legs slidably moved into said sockets, ahorizontal tranverse rotatable locking pin operatively associated withone leg of the shackle, a horizontal slidable locking pin operativelyassociated with the other leg of the shackle, means to manually movesaid locking pins to lockin or released position, means including a purality of rotatable tumber discs having a transverse horizontal axisand mounted between the legs of the shackle for retaining said lockingpins in looking position and movable to positions for permittingreleasing movement of the locking pins, and means to rotate said tumblerdiscs, a shaft uponwhich one of said discs is fixed, means supporting apair of said discs for free rotation relative to the shaft and the firstnamed disc, and means operatively connecting said discs in serial orderwhereby the discs are placed under the actuating influence of each otherand are permitted limited movement relative to each other, one of saiddiscs having ratchet means for preventing its rotation in one directionand permitting its free rotation in the opposite direction, a secondsliding locking pin associated with the first named leg of the shackle,and means for moving the last named locking pin to looking or releasedposition, all of said discs having peripheral notches of similar formand similarly spaced whereby one set of notches may be aligned with eachother and with one of the sliding locking pins'for permitting itsrelease when the other set of notches are registered and aligned withthe other slidin locking pin for permitting the release of t e latter.

5. A permutation padlock comprising a casing having spaced verticalsockets therein open at the top of the casing, a substantially U-shapedshackle adapted to have its legs slidably moved into said sockets, ahorizontal transverse rotatable locking pin operatively associated withone leg of the Shackle a horizontal slidable locking pin operativelyassociated with the other leg of the shackle, means to manually movesaid lockingv pins to lockin or released position, means including a purality of rotatable tumbler discs having a transverse horizontal axisand mounted between the legs of the shackle for retaining said lockingpins in looking position and movable to positions for permittingreleasing movement of the look ing pins, and means to rotate saidtumbler discs, a shaft upon which one of said discs is fixed, meanssupporting a pair of said discs for free rotation relative to the shaftand the first named disc, and means operatively connecting said discs inserial order whereby the discs are placed under the actuating influenceof each other and are permitted limited movement relative to each other,the means for placing said discs under the actuating influence of eachother and for per mitting their limited relative movement embodyinglateral oppositely projecting extending toward each other and carrie bytwo of said discs and another of said discs being arranged between saidtwo discs and having an arcuate slot into which said pins project, saidpins being disposed so as to pass each other in said slot.

In testimony whereof I hereunto afiix my signature.

EMIL I. LINDBERG.

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